<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>封面图片玻璃效果demo</title>
  <style>
    #box {
      position: relative;
    }

    #image {
      position: absolute;
    }

    #background {
      display: block;
      position: absolute;
      width: 100px;
      height: 100px;
      background-image: url(https://s2.music.126.net/style/web2/img/coverall.png?347f1a3b219c3857bf2bb3475cf014aa);
      background-position-x: 0;
      background-position-y: -570px;
    }
  </style>
</head>

<body>
  <div id="box">
    <img src="https://p3.music.126.net/p8I7_-XVD1vOHYcuIvUjAQ==/109951166903111181.jpg?param=100y100" alt="" id="image">
    <a href="" id="background"></a>
  </div>


  <div class="bill-cover">
    <img src="" alt="">
    <a href="" class="bill-cover-glass"></a>
  </div>

  
  <script>

  </script>
</body>

</html>